16558228225723 has 8 divisors (see below), whose sum is σ = 16591306413600. Its totient is φ = 16525152185088.

The previous prime is 16558228225709. The next prime is 16558228225733. The reversal of 16558228225723 is 32752282285561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16558228225723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16558228225703) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15371563 + ... + 16413451.

It is an arithmetic number, because the mean of its divisors is an integer number (2073913301700).

Almost surely, 2^{16558228225723} is an apocalyptic number.

16558228225723 is a deficient number, since it is larger than the sum of its proper divisors (33078187877).

16558228225723 is a wasteful number, since it uses less digits than its factorization.

16558228225723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1073621.

The product of its digits is 32256000, while the sum is 58.

The spelling of 16558228225723 in words is "sixteen trillion, five hundred fifty-eight billion, two hundred twenty-eight million, two hundred twenty-five thousand, seven hundred twenty-three".